package File;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Demo17 {
    public static void main(String[] args) {
        try(OutputStream outputStream=new FileOutputStream("./test.txt",true)){
            byte[] b={99};
            outputStream.write(b);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }


    }
}
